Hi,
I have a doubt for a long time. I got married a year back. After marriage my weight has increased much (approx 10kgs more). I heard from my friend that if i have frequent sex my weight will increase. Is it true? In the past month i had sex daily continously for 10 days. I could drasitically see that my wieght has increased 5 more kgs.Usually we have sex 3 or times in a week. We use condoms.

if you take in more calories than you burn off each day you will gain weight. Its silly to say that sex causes it, unless because you are having sex you are laying around and not burning off calories.
common myth, sex causes weight loss.....now that I could understand believing more that what you heard. But having sex burns very few calories.
Eat less or exercise more or both to lose the weight.